a.

1. 宏偉的
   His scheme may look very grandiose on the surface, but it lacks details for implementation.

   他的計劃表面上看起來很宏偉，但卻缺乏施行的細節。

2. 浮誇的；誇張的；華而不實的
   He wrote a grandiose dissertation.

   他寫了一篇華而不實的博士論文。

adj.

1. impressive or magnificent, especially pretentiously so.
2. conceived on a very ambitious scale.